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vol.32 número2Control del Hipertenso, un desafío no resuelto: Avances logrados en Chile mediante el Programa de Salud CardiovascularDilatación de la raíz aórtica en pacientes con válvula bicúspide tras la sustitución valvular aórtica índice de autoresíndice de materiabúsqueda de artículos
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Revista chilena de cardiología

versión On-line ISSN 0718-8560

Resumen

PAREDES, Federico et al. Video assisted myectomy for relief of left ventricular tract obstruction in patients with Obstructive Hypertrophic Cardiomyopathy. Rev Chil Cardiol [online]. 2013, vol.32, n.2, pp.97-103. ISSN 0718-8560.  http://dx.doi.org/10.4067/S0718-85602013000200002.

Aim: To report a clinical experience and to evaluate early and mid term results of video assisted myec-tomy for relief of left ventricular tract obstruction (LVOTO) in patients with Obstructive Hypertrophic Cardiomyopathy. Methods: 52 patients with Obstructive Car-diomyopathy and a mean age 56.2 years (12 - 83) carrying a Euro score risk of 4.1 ± (SD 1.92), were consecutively operated on in a single center. Relief of LVOTO was performed with video assisted myec-tomy. Clinical and echocardiographic follow up to 1 year postoperatively was carried out. Results: Apart from the Obstructive Cardiomyo-pathy, 11 patients had aortic valve disease, 2 mitral valve disease, 3 ischemic heart disease, 1 an ascending aortic aneurysm and 1 a patent foramen ovale. All these lesions were surgically repaired in the same surgical act. In hospital mortality was 5.8% (3 patients). Pre-operatively 15.4% of patients were in NYHA Class II, 80.8% in Class III and 3.8% in Class IV. After surgery peak sub aortic gradient decreased from 80.7±29.43mmHg to 19.0 ± 15.57 (p<0.001). Corresponding values were 14.6 ± 8.88 at 1month and 13.9 ± 7.69 at 1 year post operatively. Interven-tricular septal thickness in diastole decreased from 19.4 ± 3.78 mm to 12.9 ± 2.35 mm after surgery (p<0.001). All patients were Class I or II at the end of follow up. Conclusion: Video assisted myectomy is safe and effective for relief of LVOTO in patients with hypertrophic cardiomyopathy. Good results are maintained one year after surgery.

Palabras clave : Obstructive Hypertrophic Cardiom-yopathy; Cardiac Surgery; video assisted myectomy.

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